<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script language="javascript" src="../js/jquery-3.3.1.min.js"></script>
    <script>
        $(document).ready(function()
        {
        alert("我的第一个jQuery脚本！");
        });
        </script>
</head>
<body>
    
</body>
</html>